Sample fluid dispensing apparatus for chemical testing apparatus

ABSTRACT

A SAMPLE PICK UP AND DISPENSING APPARATUS FOR PICKING UP SAMPLES TO BE TESTED FROM A SAMPLE CONTAINER AND DISCHARGING THEM INTO A PLURALITY OF TESTING CONTAINERS. A WATER FILLED PICK UP AND DISPENSING CONDUIT ACTUATED BY A CYLINDER AND PISTON ASSEMBLY FOR PROVIDING ACCURATE HANDLING OF THE SAMPLES. AN AIR INTERFACE PISTON AND CYLINDER ASSEMBLY CONNECTED TO THE CONDUIT AND CLEANING MEANS CONNECTED TO THE CONDUIT FOR FLUSHING WATER THERETHROUGH THEREBY PREVENTING DILUTION OF THE SAMPLE AND CROSS-CONTAMINATION BETWEEN DIFFERENT SAMPLES. MEANS FOR EXPELLING A PORTION OF THE TEST SAMPLE BACK INTO THE SAMPLE CONTAINER PRIOR TO DISPENSING SAMPLES INTO THE TESTING CONTAINERS TO INSURE CONSTANT DELIVERY OF THE SAMPLES TO THE TESTING CONTAINERS.

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SAMPLE FLUID DISPENSING APPARATUS FOR CHEMICAL TESTING APPARATUS 33 Sheets-Sheet 7 Original Filed June 14 1968 ATTORA/EVJ Feb. 13, 1973 J. J. MORAN 3,716,338

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Feb. 13, 1973 J. J. MORAN 3,716,333

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SAMPLE FLUID DISPENSING APPARATUS FOR CHEMICAL TESTING APPARATUS Origin-a1 Filed June 14, 1968 33 Sheets-Sheet 1a MAJfE/P TIMER JYA/C. CONT:

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SAMILJ'. FLUID UISPUNSINO APPARATUS FOR CHEMICAL TESTING APPARATUS Original Filed June 14, 1968 3 Sheets-Sheet 20 c/5/9/7 (f Mora/7 I N VENTOR. 

